CONCEPT
Category Mistake
Ryle's diagnostic for questions that misallocate concepts to the wrong logical type — treating a University as a thing alongside its colleges, or thinking as an event alongside processing.
A category mistake, in Ryle's precise formulation, is not a factual error but a grammatical confusion in which a concept is treated as belonging to a logical type different from the one its ordinary use requires. The Oxford visitor who asks where the University is after seeing the colleges, libraries, and playing fields is not stupid; he has misallocated 'University' to the category of spatial objects when it properly belongs to the category of organizational patterns. The mistake is resilient precisely because it is built into the way the question is framed. For the AI debate, the category mistake of the age is treating 'thinking' as a hidden inner event that either does or does not occur alongside the machine's computational operations — demanding a ghost the grammar never entitled us to expect.
In The You On AI Field Guide
The structure of a category mistake is subtle because the person making it does not feel confused. The Oxford visitor feels that his guide is